By Ekaterina, Co-founder & CEO of The Ice House, Dubai | Updated September 2026 | 9-minute read
Is sauna good for men’s heart health? The strongest evidence comes from a 20-year Finnish study of middle-aged men. Men who used a sauna 4–7 times a week had a much lower risk of dying from heart disease than men who went once a week. That study shows an association, not proof of cause. Controlled trials suggest sauna may lower blood pressure, especially when combined with exercise.
Key Takeaways
- The landmark study: In a Finnish study of 2,315 men aged 42–60, followed for about 21 years, men who used a sauna 4–7 times a week had a 63% lower risk of sudden cardiac death than once-a-week users.
- Session length: Sessions longer than 19 minutes were linked to about half the risk of sudden cardiac death compared with sessions under 11 minutes.
- Blood pressure: In an 8-week trial, adding a 15-minute sauna after exercise lowered systolic blood pressure by 8 mmHg more than exercise alone.
- Not proof yet: A 2025 meta-analysis of 20 controlled trials found no clear pooled benefit for most heart markers.
Why Does Heart Health Matter More After 40?
Heart disease is the world’s leading cause of death. It accounted for an estimated 19.8 million deaths in 2022, about a third of all deaths worldwide. For men, risk rises steadily from the 40s onward. That is also the age when many men start looking at recovery tools such as the sauna and the ice bath. It makes sense to understand what these tools can and can’t do for the heart.
What Did the Famous Finnish Sauna Study Find?
It found that frequent sauna use was strongly linked to a lower risk of fatal heart disease in middle-aged men.
The study was part of the Kuopio Ischaemic Heart Disease Risk Factor Study (KIHD) and was published in JAMA Internal Medicine in 2015. It followed 2,315 men from eastern Finland, aged 42 to 60, for a median of 20.7 years. The results by weekly frequency, compared with men who used the sauna once a week:
| Outcome | 2–3 sessions per week | 4–7 sessions per week |
|---|---|---|
| Sudden cardiac death | 22% lower (not statistically significant) | 63% lower |
| Fatal cardiovascular disease | Lower | 50% lower |
| Death from any cause | Lower | 40% lower |
Time per session also mattered. Men whose sessions lasted more than 19 minutes had about half the risk of sudden cardiac death of men whose sessions lasted under 11 minutes.
The men in the study were typical middle-aged men. Their average age was 53, and their average blood pressure was 134/88 mmHg, which is borderline high. The saunas averaged about 79°C, which is typical of a traditional Finnish sauna.
Does this prove sauna protects the heart?
No, it shows a strong association, not cause and effect. The editor of JAMA Internal Medicine pointed out that it isn’t clear what drove the benefit. It could be the heat itself, the relaxation, the time and lifestyle that allow regular sauna use, or the social side of sauna culture. Later work by the same research group found that the link between sauna use and heart health interacts with physical activity, inflammation and socioeconomic status. That means the heat is probably not the whole story.
Can Sauna Lower Blood Pressure?
Controlled trials suggest it can, especially when sauna is combined with exercise. The evidence is less consistent for sauna alone.
- Sauna plus exercise (2022 randomised trial): 47 adults with an average age of 49, who were inactive and had at least one heart-disease risk factor, trained for 8 weeks. The group that added a 15-minute sauna after exercise lowered systolic blood pressure by 8 mmHg more than exercise alone. They also gained more fitness and had lower total cholesterol.
- Longer-term pooled evidence (2025 meta-analysis): researchers from Brigham and Women’s Hospital and Harvard reviewed 20 randomised trials of saunas, hot baths and other passive heating. They found no significant pooled effect for most heart markers, including cholesterol, arterial stiffness and heart rate variability. The overall blood pressure effect was a 2.5 mmHg reduction that did not reach statistical significance. They did see a possible reduction in people who already had heart risk factors or heart disease.
- Heart patients (2023 trial): in 41 adults with stable coronary artery disease, 8 weeks of Finnish sauna four times a week did not improve blood pressure or blood vessel function.
The practical read: sauna works best as a partner to exercise, not a replacement for it.
Is an Infrared Sauna as Good as a Finnish Sauna for Your Heart?
It’s not yet known, the major prevention studies used traditional Finnish saunas, not infrared.
Infrared saunas have their own heart research, but it comes from a different group of people. In Japan, cardiologists developed Waon therapy for patients with heart failure: 15 minutes in a far-infrared sauna at 60°C, followed by 30 minutes of rest under a blanket. A 2018 meta-analysis found this protocol led to short-term improvements in heart function, including lower heart-strain markers and better pumping efficiency. It did not significantly change blood pressure.
That evidence is encouraging, but it is about treating existing heart failure over a few weeks. It is not about preventing heart disease in healthy men. Anyone who tells you an infrared sauna will cut your heart-attack risk by 50% is borrowing numbers from a different kind of sauna.
Is Cold Plunging Good for Your Heart?
There is little evidence that cold plunging protects the heart. The research on cold water and the heart is mostly about safety.
When cold water hits your skin, your body launches the cold shock response. You gasp, breathing becomes rapid, blood vessels narrow and your heart rate and blood pressure jump. In one study, average blood pressure rose from 130/76 to 175/93 mmHg after one minute of an ice-water shower. The researchers noted that this poses a risk for people with high blood pressure or heart disease.
Some studies of regular winter swimmers found improved cholesterol markers, but a 2024 review noted this benefit seemed stronger in women. There is no strong evidence that ice baths reduce heart disease risk in men.
What is “autonomic conflict,” and why does it matter?
Autonomic conflict happens when cold water triggers two opposing heart reflexes at once, which can disturb heart rhythm.
Researchers at King’s College London described it in 2012. Cold on the body pushes the heart to speed up. Cold water on the face, combined with breath-holding, triggers the diving reflex, which pushes the heart to slow down. When both fire together, some people develop abnormal heart rhythms. In people with underlying heart problems, this may be dangerous.
Conclusion? Do not submerge your face into the cold water when cold plunging – it increases the risks and not adding any science-backed benefits.
Is cold plunging safe for men over 40?
For healthy, active middle-aged adults, recent evidence is reassuring, as long as you keep your head above water and breathe normally.
A 2026 study monitored the heart rhythms of 20 recreational athletes with an average age of 56 for 10 days around the Geneva Christmas Cup cold-water swim. More than a third had a high 10-year heart-disease risk score. Across 64 cold-water sessions at about 7°C, only one participant had one brief abnormal rhythm episode. The authors credited the low rate to swimming without breath-holding and with the head above water, which minimises autonomic conflict. This was a small study, so the authors called for larger research.
Does it get easier with practice?
Yes. The cold shock response weakens with repeated exposure. In one study, heart rate during the first 30 seconds of immersion was noticeably lower on the seventh plunge than the first, even when the plunges were done on the same day. Starting gently and building up is the safest approach.
A Practical Heart-Smart Guide for Men Over 40
| Step | What to do | Why |
|---|---|---|
| Before you start | Talk to your doctor if you have high blood pressure, heart disease, chest pain, arrhythmia or take heart medication | The first minute of cold places real strain on the heart |
| Sauna frequency | Build up toward 2–4 sessions per week | Benefits in the Finnish study rose with frequency |
| Sauna duration | Start at 10 minutes and build gradually | Longer sessions were linked to lower risk |
| Pair it with exercise | Use the sauna after training | Sauna plus exercise showed the clearest blood pressure benefit |
| Cold plunge entry | Get in slowly and breathe out steadily | Controls the gasp and hyperventilation of cold shock |
| Head and breath | Keep your face out of the water; never hold your breath | Avoids autonomic conflict, the main rhythm risk |
| Cold duration | Start with 1–3 minutes at 12–15°C | Colder isn’t necessary, and the body adapts over time |
| Avoid | Alcohol before or during sessions, plunging alone, pushing through dizziness or chest discomfort | Basic heat and cold safety |
The Bottom Line
For men over 40, the sauna has the stronger heart-health case. Twenty years of Finnish data link frequent use to much lower cardiac risk, and trials suggest it adds a blood pressure benefit on top of exercise. The ice bath’s value lies elsewhere, in how it makes you feel. Its heart story is about doing it safely. Respect the first minute, keep your head up, breathe, and build up slowly.
Frequently Asked Questions
Is sauna good for men’s heart health?
Research links frequent sauna use to lower heart risk. In a 20-year Finnish study, men using a sauna 4–7 times a week had a 63% lower risk of sudden cardiac death than once-weekly users.
How often should a man use a sauna for heart health?
The Finnish study found the lowest risk at 4–7 sessions per week, with sessions over 19 minutes. Build up gradually, and speak to your doctor first if you have a heart condition.
Does sauna lower blood pressure?
It may. An 8-week trial found that adding a 15-minute sauna after exercise lowered systolic blood pressure by 8 mmHg more than exercise alone.
Is an infrared sauna good for your heart?
Infrared sauna has shown short-term improvements in heart function in heart-failure patients. The long-term prevention evidence comes from traditional Finnish saunas, not infrared.
Is cold plunging bad for your heart?
Cold plunging causes a sharp, temporary rise in heart rate and blood pressure. It is generally considered safe for healthy adults who enter slowly and keep their face out of the water. People with heart conditions should get medical clearance.
Can a man over 40 do ice baths?
Yes, if he is healthy and starts gradually. A 2026 study of middle-aged cold-water swimmers found very few rhythm problems when participants kept their heads above water.
Should I put my head under in an ice bath?
No. Submerging your face while holding your breath can trigger conflicting heart reflexes that disturb heart rhythm.
About the Author
Ekaterina is the co-founder and CEO of The Ice House, a premium contrast therapy studio with locations in DIFC and Meadows, Dubai. Before founding The Ice House, she spent more than a decade in corporate finance, operations and internal audit, and holds the Certified Internal Auditor (CIA) certification. She applies the same evidence-first approach to recovery and wellness.
This article is for general information only and is not medical advice. Speak to your doctor before starting sauna or cold water immersion if you have any medical condition.
Sources
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